1790921838 has 32 divisors (see below), whose sum is σ = 3605277600. Its totient is φ = 593081856.

The previous prime is 1790921837. The next prime is 1790921911. The reversal of 1790921838 is 8381290971.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1790921833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 658770 + ... + 661482.

It is an arithmetic number, because the mean of its divisors is an integer number (112664925).

Almost surely, 2^1790921838 is an apocalyptic number.

1790921838 is an abundant number, since it is smaller than the sum of its proper divisors (1814355762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1790921838 is a wasteful number, since it uses less digits than its factorization.

1790921838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3396.

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 1790921838 is about 42319.2844693764. The cubic root of 1790921838 is about 1214.3919435383.

The spelling of 1790921838 in words is "one billion, seven hundred ninety million, nine hundred twenty-one thousand, eight hundred thirty-eight".